Sick

Why is it that whenever you actually have something big coming up, your body decides that it wants to be sick? I am supposed to sing at a wedding that I am in on Saturday. Currently, my throat is on fire and it hurts to swallow. ERR.... I barely ever get sick, but sure enough, I have something planned, and that is when the germies always come out and play. I am doped up on amoxicillin, dayquil, robitussin, and throat spray... I hope it works. ugh...